CSS to enlarge text size of single ui-text node value

Dashboard
4

ok, so i tried
[node-id="415c4c9bd2b631ed"] .value { font-size: 1.5em; }
with of course the ID of the text i need to change:

already had the <font size = 16>{{msg.payload}}

which yes, changed the font to a bigger size..... but i cannot go bigger, and i need one set of number bigger, like almost 1 inch tall on a 7in screen held horizontal....

any ideas?

edit, seems 1-8? is the range of sizes....px and em seem to do nothing